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to be boiled down
to come to a standstill; to reach an impasse
to approach a conclusion (of a discussion, investigation, etc.)
計画がようやく煮詰まった。
The plan has finally been finalized.
議論が煮詰まってきた。
The discussion is coming to a conclusion.
ソースが煮詰まるまで待つ。
Wait until the sauce is reduced.